Abstract
We presented a 15-year-old girl who showed psychotic episodes with forced normalization on EEG. She had suffered from a cerebral astrocytoma and surgical removal was performed at the age of 2 years. As she showed astatic seizures and tonic seizures after the operation, valproate, clonazepam, acetazolamide and primidone were given. As the clonic seizures occurred several times a week, she was referred to us for further seizure control. After acetazolamide and primidone had been cut and valproate decreased, the seizure frequency became monthly. At the age of 12 years, surgical removal of the recurrent brain tumor was performed. At the age of 14 years, psychotic episodes began to occur and gradually increased in frequency. Eventually they continued for 5-6 hours a day. After carbamazepine and hydroxyzine had been added and valproate cut, the psychotic episodes disappeared. During the psychotic episodes the seizure activity on scalp EEG disappeared, but reappeared after disappearance of the psychotic episodes.
